In Matthew 5:18, “For verily I say unto you, Till heaven and earth pass, one jot or one tittle shall in no wise pass from the law, till all be fulfilled.”Jesus validates the absolute permanence of God’s Law, declaring that every "iota" (the smallest Hebrew letter, yod) and "tittle" (a tiny pen-stroke) will endure until all is accomplished. Rather than abolishing the Old Testament, Jesus came to perfectly fulfill its moral demands and predictive prophecies.
The Tension: Law vs. Grace
The tension between the Law and Grace is one of the most foundational paradoxes in Christian theology. When viewed correctly, the Law and Grace are not enemies, but collaborators in a believer's redemption.
The Function of the Law
The Law acts as God’s perfect, uncompromising standard of holiness.
The Mirror: As the Apostle Paul explains, the Law cannot save us; instead, it acts as a mirror that reveals our sinfulness and our inability to achieve perfection on our own.
The Iron Cage: It places us in a position of hopelessness, showing us that our inner thoughts, motivations, and actions inevitably fall short of God’s glory.
The Schoolmaster: The Law serves as a "guardian" that shuts us up under sin, driving us to our knees to cry out for a Savior.
The Power of Grace
Grace is unmerited favor—the divine intervention that does what the Law demands but cannot empower.
Because human beings are spiritually broken, the Law merely condemns. Grace offers forgiveness for our failures.
Grace takes the penalty of our transgressions and pays it in full through the sacrificial death and resurrection of Jesus Christ.
"Fulfilling" the Law
When Jesus stated in Matthew 5:17-18 that He did not come to abolish the Law but to fulfill it, He set the stage for how Grace and Law resolve their tension.
Christ’s Obedience: Jesus lived the flawless, perfect life the Law required, satisfying its demands on our behalf. This is known as "imputed righteousness".
The Changing of the Covenants: While every "stroke of a pen" in the Law is eternal, the way humanity relates to it changed at the Cross. Believers are no longer under the Law as a mechanism for salvation. They are under the Law of Christ—a New Covenant where God’s requirements are written directly on the heart rather than on stone tablets.
Grace as the Motivator for Obedience
If Jesus fulfilled the Law, does that mean Christians can discard it entirely? Not at all.
The GotQuestions.org Law vs. Grace Overview highlights that the Law shows us what holiness looks like, while Grace gives us the inner power and the regenerated heart to actually pursue it. A grace that is powerful enough to save a sinful heart is also powerful enough to motivate it toward godliness.
Therefore, Christians do not obey God's commands to earn their salvation; rather, they obey out of immense gratitude for the Grace that has already saved them.
Question was:
expound meaning and amplify matthew 5:18 especially as it applies to the tension between grace & law